It is fun! I would have used a fly if I had one. This time of year insects are in pretty short supply, unless one has a collection.
The American dollar bill is a classic subject and works well since so much of the world has seen one, and it changes so little (I see it as a real symbol of the essential conservatism at the root of American culture) – all in all a worthy subject. Canadian paper money is always changing, right now it is converting to plastic from paper, and the smallest bill is $5. Thus, a shot of a detail from a bill would not ring any familiar bells with most people, including Canadians. I did take some pictures of a 1943 British thruppence that is lying around the house (in fact, on the computer desk for the last few weeks for some unknown reason). But that reminds me, I should take a shot of the little hologram on a credit card. The holidays are coming to an end, and probably my close up photography will be quite intermittent. I find that it takes a huge amount of time. Each of these three posts has probably taken 4 or 5 hours in total for shooting and processing images. I really should be putting that much effort into some of my landscape shots!